Abstract

We show that by ion-beam sputtering of a 304 L stainles steel target under ultra high vacuum, it is possible to elaborate thin films exhibiting both a bcc single phase and a strongly ferromagnetic structure at 293 K. The hyperfine field measured at the 57 Fe nucleus using the Mossbauer effect is studied in details as a function of sample thickness. The field value is close to that of bulk α-iron while the direction of the magnetization lies in the film plane when the thickness of the sample is -0.4 μm. Experimental values are compared with data available in the literaturee. The possible role of chromium atoms is also discussed

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